基于FIFO的循环移位寄存器实现方法

Implementation of circulating shift-register based on FIFO

为了完成高频率下相关器的时分复用,相关器的低频输入数据须通过循环移位寄存器移位。提出了在FPGA中采用多级串联FIFO核实现循环移位寄存器。对上述方案进行FPGA仿真实验,经实测表明基于FIFO的循环移位寄存器工作稳定,能够实时地提供准确数据给时分复用相关器模块。

Since the low frequency input data of the correlator should be shifted by circulating shift-register to accomplish time division multiplexing of the correlator in high frequency,an implementation method of circulating shift-register which adopts series FIFO (First input first output) core in FPGA is proposed. FPGA simulation of the scheme mentioned above was performed. The results shows that the shift-register based on FIFO works stable and can provide accurate data to the time divi-sion multiplexing correlator.